Willem Koerselman, Steven A. Bakker, Marjan Blom, Nitrogen, Phosphorus and Potassium Budgets for Two Small Fens Surrounded by Heavily Fertilized Pastures, Journal of Ecology, Vol. 78, No. 2 (Jun., 1990), pp. 428-442
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Koerselman et al. (1990) studied this question.
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